2016 CAP Congress / Congrès de l'ACP 2016

Session

T1-1 Medical Imaging (DPMB) / Imagerie médicale (DPMB)

T1-1

14 Jun 2016, 08:30

University of Ottawa

Conveners

T1-1 Medical Imaging (DPMB) / Imagerie médicale (DPMB)

• Melanie Martin (University of Winnipeg)

1429. Magnet and Radiofrequency Technology for Low Cost Magnetic Resonance Imaging

Prof. Jonathan Sharp (University of Alberta)

14/06/2016, 08:30

Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

Invited Speaker / Conférencier invité

MRI is a highly effective, but expensive imaging modality. Lower strength magnetic field and lower cost variants of MRI are being developed for specific applications. We will focus on one approach, ‘Transmit Array Spatial Encoding’ (TRASE), which uses only a resonant radiofrequency (RF) field to produce Fourier spatial encoding equivalent to conventional MRI. The usual audio frequency switched...

1106. Frequency-Domain Synthetic Aperture Focusing Techniques for Imaging with Single-Element Focused Transducers

Mr Elyas Shaswary (Dept. of Physics, Ryerson University)

14/06/2016, 09:00

Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

The resolution of conventional single-element ultrasound imaging varies spatially and depends on several factors, such as the central frequency, bandwidth, and the transducer’s active aperture size. Synthetic aperture focusing techniques (SAFT) enable dynamic focusing, which, among others, could lead to improvements in the spatial resolution of ultrasound imaging systems. In SAFT, a large...

1299. Feasibility of noninvasive temperature estimation using acoustic harmonics

Mr Elyas Shaswary (Dept. of Physics, Ryerson University)

14/06/2016, 09:15

Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

In this study, the feasibility of obtaining 2D temperature change maps was investigated by estimating the change in backscattered energy of the acoustic harmonics and comparing it with the standard RF echo shift technique. A commercial high-frequency ultrasound scanner (Vevo® 770, Visualsonics Inc., Toronto, ON, Canada) with a 25-MHz center frequency wide-band single-element transducer...

1182. Cholesterol Expels Ibuprofen from the Hydrophobic Lipid Membrane Core

Richard Alsop (McMaster University)

14/06/2016, 09:30

Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

All drugs must cross the lipid membrane to enter the cell, either by passive or active transport. Diffusing drug molecules may interact with, or embed in, the bilayer and change membrane structure and function. We have observed a significant interaction between cholesterol and the common analgesic, ibuprofen, in model lipid membranes [1]. Using X-ray diffraction in highly oriented,...

1507. NEMA Standard Measurements in Pre-clinical PET Imaging

Esmat Elhami (University of Winnipeg)

14/06/2016, 09:45

Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

Oral (Non-Student) / orale (non-étudiant)

NEMA (National Electrical Manufacturers Association) Standard Measurements are used for evaluating the performance of the positron emission tomography scanners used in animal imaging. There are various measurements, including spatial resolution, scatter fraction, sensitivity, and image quality.
In this study the effects of varying the testing procedures of the NEMA NU4-2008 standard for...